pacman-sync

Arch Linux package manager utility.

Install a new package

$ sudo pacman --sync [package]

Synchronize and update all packages (add --downloadonly to download the packages and not update them)

$ sudo pacman --sync --refresh --sysupgrade

Update all packages and install a new one without prompting

$ sudo pacman --sync --refresh --sysupgrade --noconfirm [package]

Search the package database for a regular expression or keyword

$ pacman --sync --search "[search_pattern]"

Display information about a package

$ pacman --sync --info [package]

Overwrite conflicting files during a package update

$ sudo pacman --sync --refresh --sysupgrade --overwrite [path/to/file]

Synchronize and update all packages, but ignore a specific package (can be used more than once)

$ sudo pacman --sync --refresh --sysupgrade --ignore [package]

Remove not installed packages and unused repositories from the cache (use two --clean flags to clean all packages)

$ sudo pacman --sync --clean